Whichofthefollowingchoicesisnotcorrect？

A.Tocontrastmeanstoshowthedifferences

B.Itisnecessarytohaveatopicsentenceinyouressay.

C.ThePoint-by-pointapproachisbetterthantheSubject-by-subjectapproach.

D.Tocomparemeanstoshowthesimilarities

正确答案：ThePoint-by-pointapproachisbetterthantheSubject-by-subjectapproach.